Double stone circle, diamater: ca. 500m, erected 3000-2500 BC (contemporary to Stonehenge. The avenue, two rows of standing stones leading to the circle (henge). Silbury hill, 40m high, the largest man-made mound at the time. Its purpose is unknown. Silbury hill, 40m high, the largest man-made mound at the time. Its purpose is unknown. West Kennett long barrow: 3500 BC, a burial site containing multiple chambers where at least 46 people were burried over 1000 years. West Kennett long barrow. Avebury manor farm, 16th and 18th centuries. The 16th century dovecote hosted 100 pigeons. Avebury manor farm, 16th and 18th centuries. Antonine wallBath Labels